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Great Lakes Daily News

Heat waves and cold snaps: Study finds the Great Lakes have entered an era of extremes

Aug 22, 2025 | Daily News

A new study shows that Great Lake surface temperatures have experienced increasing extremes from heat waves to cold spells dating back to the late 1990s. Read the full story by Great Lakes Now.


Click here for additional Great Lakes news stories from around the region, curated daily by Great Lakes Commission staff.

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Latest Daily News

  • Heat waves and cold snaps: Study finds the Great Lakes have entered an era of extremes
  • DNR officials: Oldest known lake trout in Great Lakes was 62
  • Blue-green algae blooms on Superior ‘surprising and troubling’ says researcher but past data incomplete
  • Lake Michigan water pipeline bids come in higher than expected
  • Early research shows an ancient fish is making a comeback in local waters
  • How did Milwaukee’s sewerage district decide to do a sewer overflow during historic flood?
  • ‘Carrying on the history’: Leading the Lockport Locks into the Erie Canal’s bicentennial
  • Great Lakes Day of Action to include Presque Isle Harbor beach cleanup
  • Will massive water needs of data centers, farms, mines be too much for the Great Lakes?
  • Downtown Toronto keeps its cool thanks to Lake Ontario
  • Ann Arbor’s Great Lakes Environmental Research Lab faces potential shutdown
  • Michigan lawmakers introduce bills to tackle microplastics in the Great Lakes
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The Great Lakes Commission (GLC) does not discriminate on the basis of any characteristic protected by federal nondiscrimination laws. For the GLC’s complete nondiscrimination policy and procedures, click here (PDF).